EVALUACIÓN DE UN ADITIVO OXO-DEGRADABLE EN UNA MATRIZ DE POLIPROPILENO SOMETIDO A DEGRADACIÓN TÉRMICA ACELERADA E INTEMPERIE

Authors

  • Naymar Méndez
  • Marí­a L. Arnal
  • Johan J. Sánchez
  • Alejandro J. Müller

Abstract

This  work  evaluated  the  effect  of  an  “oxo”  additive  on  the  physicochemical  behavior  of  PP  at  different  times  of accelerated thermodegradation (60°C) and natural weathering. Extruded films with thickness of 60±5 μm, mixed with 0; 1,5; and 3,0 % of “oxo” additive were prepared and characterized by FTIR, DSC, TGA, NMR and tensile tests. A decrease of the molecular weight to values in the order of 103 g/mol caused by chain scission and appearance of alcohol, carbonyl groups  and  double  bonds  were  observed,  as  well  as  a  decrease  in  melting  temperatures  (10-18ºC)  and  crystallization temperatures ( ≈30ºC) and changes in the multiple melting endotherm that  was observed by thermal fractionation (SSA). Tensile  tests  showed  a  fragile  behavior  after  5  days  in  the  oven  for  a  content  of  "oxo"  additive  of  3,0%.  The  samples subjected  to  environmental  conditions  showed  similar  results  with  lower  oxidation  rates  than  those  subjected  to thermodegradation.

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Published

2014-04-26

How to Cite

Méndez, N., Arnal, M. L., Sánchez, J. J., & Müller, A. J. (2014). EVALUACIÓN DE UN ADITIVO OXO-DEGRADABLE EN UNA MATRIZ DE POLIPROPILENO SOMETIDO A DEGRADACIÓN TÉRMICA ACELERADA E INTEMPERIE. LatinAmerican Journal of Metallurgy and Materials, (1), 29–30. Retrieved from https://www.rlmm.org/index.php/rlmm/article/view/592

Issue

2014, S6

Section

Supplementary Articles

License

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